International Journal of Computer Science Issues

More than a traditional journal...

Wireless technologies such as WiFi and Bluetooth have transformed the world of networks, and this technical revolution is still in its infancy. Wi-Fi (802.11b and g) now offers a limited range. It is also very susceptible to interference originating DECT phones and other wireless units. Finally, the Wi-Fi in its current version is much slower in terms of flows, the good old Ethernet. All this should change over to succeed the 802.11g. The 802.11n standard expected to provide data rates higher than an Ethernet connection and double the range. The use of combination VBLAST-MMSE-OFDM with MIMO (multiple input-multiple outputs) can leverage the advantage of both methods: the robustness of the link on frequency selective channels for OFDM and robustness of uncorrelated channels for OFDM and robustness of uncorrelated channels for MIMO space-coded. This article discusses the impact of technology (MIMO) wireless transmission of type Wi-Fi (802.11n), in a context-VBLAST MMSE-OFDM. We will carry out a study of performance in terms of BER for a Rayleigh channel that characterizes most communication systems without son.